Add device tree bindings and an example for max31790 device. Signed-off-by: Chanh Nguyen <chanh@xxxxxxxxxxxxxxxxxxxxxx> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> --- Changes in v2: - Update filename of the maxim,max31790.yaml [Krzysztof] - Add the common fan schema to $ref [Krzysztof] - Update the node name to "fan-controller" in maxim,max31790.yaml [Krzysztof] - Drop "driver" in commit title [Krzysztof] Changes in v3: - Drop redundant "bindings" in commit title [Krzysztof] - Add the clocks and resets property in example [Krzysztof] - Add child node refer to fan-common.yaml [Krzysztof, Conor] Changes in v4: - Add Chanh Nguyen to maintainers list [Chanh] - Drop incomplete example [Krzysztof, Conor] - Drop the cover letter because only a patch existed [Chanh] --- .../bindings/hwmon/maxim,max31790.yaml | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml diff --git a/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml new file mode 100644 index 000000000000..b1ff496f87f9 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/maxim,max31790.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/maxim,max31790.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: The Maxim MAX31790 Fan Controller + +maintainers: + - Guenter Roeck <linux@xxxxxxxxxxxx> + - Chanh Nguyen <chanh@xxxxxxxxxxxxxxxxxxxxxx> + +description: > + The MAX31790 controls the speeds of up to six fans using six + independent PWM outputs. The desired fan speeds (or PWM duty cycles) + are written through the I2C interface. + + Datasheets: + https://datasheets.maximintegrated.com/en/ds/MAX31790.pdf + +properties: + compatible: + const: maxim,max31790 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + "#pwm-cells": + const: 1 + +patternProperties: + "^fan-[0-9]+$": + $ref: fan-common.yaml# + unevaluatedProperties: false + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + pwm_provider: fan-controller@20 { + compatible = "maxim,max31790"; + reg = <0x20>; + clocks = <&sys_clk>; + resets = <&reset 0>; + #pwm-cells = <1>; + + fan-0 { + pwms = <&pwm_provider 1>; + }; + + fan-1 { + pwms = <&pwm_provider 2>; + }; + }; + }; + -- 2.43.0
